I have read several stories recently here about mothers with growing sons who masturbate. I suppose I am no different, but don't really know how to handle the situation.

I am a single mother aged 38 and my son is 16. My story goes back around two years ago when I first noticed yellow cum stains on his white linen sheets. I grew up with a brother who did the same thing, so I know what causes it. I thought that to be perfectly normal as I presume all growing boys discover masturbation from talking to other boys at school.

One day when I was airing out his mattress while at school, I noticed a cache of porn magazines under his mattress. I haven't said anything to him about it and doubt whether I will. I would hate to embarrass him into thinking sex is a dirty word.

Like all teenagers, they don't make their beds very well, if at all, so while changing his linen regularly, I have a peek under the mattress as well. Apart from finding magazines, I have also found several pairs of panties, some of which are mine, as well as two bras. This got me to wondering a bit and before doing the wash, I have checked out to see it any of my underwear has been disturbed. Regretfully, some of my underwear has cum stains on them. How in the heck do I tell him to stop?

We live by the ocean and often go to the beach together. We also have a small pool in our backyard which we use in the hot summer evenings. In the past year and recently, my son has been staring at me more and more as he is tending to notice my figure. I am a size 34B and have more than a reasonable figure for my age, something that I am quite proud of. Surely he couldn't be thinking of me in a sexual way?

One weekend I had been out most of the time and I come home unbeknown to him. I looked out the back bedroom window only to find him naked on the babana lounge, stroking himself. I couldn't believe it and as if entranced, found myself just staring at him until he came. In summer I wear a lot of bikinis or just bikini panties and a top without a bra around the house as it is so much more comfortable.

At the start of summer a couple of months ago, I decided on having a day out at the beach as he just loves the beach. I packed all the stuff, food, drink, sun screen, towels, the lot and my son took his surf board of course. I never told him at the time we were going to go to a nude beach around two hours drive away. I was thinking if he was interested in female bodies, what better place would there be than a nude beach. He could have a good look and sate his curiosity, rather than look at glossy magazines.

We arrived there and walked some distance to the beach. The first thing Edward (not his real name) said was 'Look mum, they have no clothes on.' I smiled at him and said, no they don't. Let's go down as there is a good surf for you. Edward asked me if I was going to take off my clothes too. I replied, of course, and I expect you will too. I found a lovely spot and dropped all the gear, set up the umbrella and laid down the towels on the banana lounges. I started taking off my clothes and Edward was watching me. He seemed to be a little embarrassed, but kept watching me undress. I lay down on the seat and asked when he was going to take off his clothes?

Edward then asked me what if something happens? I said, 'What do you mean?' He said what happens if I go hard down there. I told him all males do that at times and it's no big deal. Just go into the water until it goes down. Reluctantly, he started to disrobe until he was completely naked. I told him to put on some sunscreen so he didn't get burnt, especially on his penis. He turned away from me and put sunscreen all over himself except his back, where I helped him do that. When he turned around, he had a fair sized hardon. I was almost shocked as I was much closer now than when I saw him masturbating by the pool. His penis was around six inches long, same as his dad's but nowhere near as thick. He had an ample amount of pubic hair and was developing into a real man.

I suggested to Edward that we go into the surf so everyone doesn't see his erection, so he followed me in. He was looking at my breasts and even passed a comment about me being 'not too bad looking'. We spent around 15 minutes in the water and his erection wouldn't go down and he was a bit concerned about going back to the shore with a hardon. I asked if he ever masturbated, knowing perfectly well that he did, and he said yes. We waded a little deeper into the water and suggested he relieve himself, then his erection would go away. Edward did this and I kept bobbing above and below the waterline to keep myself moist and away from the harsh sun. I was entranced under the water to see him stroke himself off. He soon came in about two minutes with 5 or 6 squirts of white cum which coiled up in the water. That was the first time I had seen a male cum under water and it was really fascinating.

We had a great day there before going home. We showered together at the beach, before getting dried and dressed. Edward thanked me for the best day ever and has wanted to go back again some time. A couple of days after the nude beach venture, he was having a shower after getting out the pool, before having dinner. He casually strolled into the kitchen as naked as a jaybird. I told him to put his clothes on and he remarked that we both showered naked together at the beach. I replied that, yes, it was at the beach and not at home. I have made those rules clear to him, but how do I stop the masturbation into my clothing?